Finding the Fourth Proportional to 385,312.68, 531,756.09 and 215,548.02
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Solution
The fourth proportional to 385,312.68, 531,756.09 and 215,548.02 is: 297,470.02
Step by Step Solution
- Step 1: Write the proportion equation
385,312.68 : 531,756.09 = 215,548.02 : x - Step 2: Convert to fraction form
385,312.68/531,756.09 = 215,548.02/x - Step 3: Cross multiply
385,312.68x = 531,756.09 × 215,548.02 - Step 4: Simplify right side
385,312.68x = 114,618,972,322.44 - Step 5: Solve for x
x = 114,618,972,322.44/385,312.68 - Step 6: Final answer
x = 297,470.02
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.